How to delete files with strange names like "<0x1f0d>:<0x198b>" reported as corrupt

[kotelni]

I have recently updated FreeNAS from 8.0.1 to 8.3.0-Release-p1.
When I was going to upgrade ZFS pool from ZFSv15 to ZFSv28 I noticed that the pool has errors. Here is the output of zpool status -v:

Code:

[root@freenas] ~# zpool status -v
  pool: first
 state: ONLINE
status: One or more devices has experienced an error resulting in data
	corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
	entire pool from backup.
   see: http://www.sun.com/msg/ZFS-8000-8A
  scan: scrub repaired 0 in 3h36m with 4 errors on Sat Feb  2 20:51:38 2013
config:

	NAME                                            STATE     READ WRITE CKSUM
	first                                           ONLINE       0     0     4
	  mirror-0                                      ONLINE       0     0     8
	    gptid/5f279dd0-0ce9-11e1-919a-001871691677  ONLINE       0     0     8
	    gptid/5f76d1d1-0ce9-11e1-919a-001871691677  ONLINE       0     0     8

errors: Permanent errors have been detected in the following files:

        <0x1f0d>:<0x198b>
        <0x1f0d>:<0x18ec>
        <0x1eed>:<0x4b3>
        <0x1efd>:<0x9fd>

I did a scrub. It did not fix the problem.
I would like to delete the files with errors so that the zpool would be healthy again but I do not know where to find these files.
If there is another way except copying all data from the zpool to some other location, recreating the pool and then copying all files back, I would be very interested to know it.